// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_URL_REQUEST_URL_REQUEST_JOB_FACTORY_IMPL_H_
#define NET_URL_REQUEST_URL_REQUEST_JOB_FACTORY_IMPL_H_

#include <map>
#include <memory>
#include <string>

#include "base/compiler_specific.h"
#include "base/macros.h"
#include "net/base/net_export.h"
#include "net/url_request/url_request_job_factory.h"

namespace net {

class URLRequestInterceptor;

class NET_EXPORT URLRequestJobFactoryImpl : public URLRequestJobFactory {
public:
    URLRequestJobFactoryImpl();
    ~URLRequestJobFactoryImpl() override;

    // Sets the ProtocolHandler for a scheme. Returns true on success, false on
    // failure (a ProtocolHandler already exists for |scheme|).
    bool SetProtocolHandler(const std::string& scheme,
        std::unique_ptr<ProtocolHandler> protocol_handler);

    // URLRequestJobFactory implementation
    URLRequestJob* MaybeCreateJobWithProtocolHandler(
        const std::string& scheme,
        URLRequest* request,
        NetworkDelegate* network_delegate) const override;

    URLRequestJob* MaybeInterceptRedirect(
        URLRequest* request,
        NetworkDelegate* network_delegate,
        const GURL& location) const override;

    URLRequestJob* MaybeInterceptResponse(
        URLRequest* request,
        NetworkDelegate* network_delegate) const override;

    bool IsHandledProtocol(const std::string& scheme) const override;
    bool IsHandledURL(const GURL& url) const override;
    bool IsSafeRedirectTarget(const GURL& location) const override;

private:
    // For testing only.
    friend class URLRequestFilter;

    typedef std::map<std::string, std::unique_ptr<ProtocolHandler>>
        ProtocolHandlerMap;

    // Sets a global URLRequestInterceptor for testing purposes.  The interceptor
    // is given the chance to intercept any request before the corresponding
    // ProtocolHandler, but after any other URLRequestJobFactories layered on top
    // of the URLRequestJobFactoryImpl.
    // If an interceptor is set, the old interceptor must be cleared before
    // setting a new one.
    static void SetInterceptorForTesting(URLRequestInterceptor* interceptor);

    ProtocolHandlerMap protocol_handler_map_;

    DISALLOW_COPY_AND_ASSIGN(URLRequestJobFactoryImpl);
};

} // namespace net

#endif // NET_URL_REQUEST_URL_REQUEST_JOB_FACTORY_IMPL_H_
